Information Technology Solutions

Safety Cri t ica l Sof tware Solut ions

fo r Miss ion Cri t ica l Systems

Designed to Save Money from

Plans to Certification

Field Proven on Hundreds of

Aircraft World-wide

State-of-the-Art Time and

Space Partitioning Capabilities

Patented Slack Scheduling

Mechanism Allows for 100%

Processor Utilization

Support for popular avionics

standards, ARINC-653

Specification Part 1 and Part 4

Superior Patented

Technology for Less

A Time & Space Partitioned DO-178 Level A Certifiable RTOS

Deos is a time & space partitioned RTOS, which has been certified to DO-178 Level A since 1998. Built from day one using Level A certification processes, Deos features hard real-time response and employs slack scheduling to deliver higher CPU utilization than any other certifiable safety-critical COTS RTOS. Additionally, Deos users have the ability to add on optional ARINC-653 personality modules designed to fit different application needs.

Deos supports the full ARINC Specification 653 Part 1, which is designed to enhance software portability to avionics operating systems. Applica-tions needing to utilize this full spec can choose this Deos personality module which delivers standards conformance combined with patented Deos technology. Other applications may only need a lightweight version, ARINC Specification 653 Part 4. This module is the right choice for less complex applica-tions such as the majority of Line Replaceable Units. Deos is the only COTS RTOS vendor sup-porting this strict subset, delivering the value added features of Deos, and the portability of the popular avionics standards.

Robust, Reliable Technology Designed to Save Money

Factoring Configuration of Deos for a specific

application is done outside of Deos proper. Therefore,

certification artifacts can be used unchanged even when

the configuration changes.

Deos Key Features & Benefits

Gives you the ability to budget in order to meet your safety require-ment, but enable slack in order to get the most out of your processor. Allows a client & server to ex-change data, perhaps multiple times, back-to-back, within the same period, in order to complete a transaction. Enables the removal of lower criti-cality applications from the high criticality, fixed budget time line.

Software designers can now leverage all the power of todays modern proc-essors, without sacrificing the safety of space & time partitioning.

Harmonic Rate Monotonic Scheduling and

Optional ARINC Scheduling Delivers the best

of both worlds to avionics systems developers!

ARINC Specification 653 Part 1

(Optional Module) Delivers the standard avionics

interfaces for enhanced portability, and allows designers

to take advantage of the advanced features of Deos.

ARINC specification 653 Part 4

(Optional Module) Delivers a streamlined sub-

set of the standard avionics interfaces for less complex

systems and the value added features of Deos.

Object Code Structural Coverage Tool

Eliminates the need for expensive source to object code

traceability analysis; creates better and safer software.

Run-time Linkable Libraries Saves valuable

space, increases modularity, and can enable customer

binary software & artifact reuse.

Slack Scheduling Allows for upwards of 100%

processor utilization without jeopardizing hard deadlines.

Unlimited Processes and Threads No

artificial limits on the number of processes and threads

allows great flexibility in the design of an application.

Larger Memory Address Up to 4GB memory

address space, maximizes available user memory and

allows for larger programs, data and future growth.

Patented Slack Scheduling Technology

OS Binary Modularity Deos components are

delivered as binary runtime linkable modules, each with

their own certification artifacts.

Field Proven on

Hundreds of Aircraft

Around the World

Airbus A320 Airbus A330 Airbus A340 Airbus A380 Airbus A400M Augusta AB-139 Helicopter Australia CASA Boeing 757 Boeing 777 Boeing 787 Bombardier Global Express C-5 C-17 C-130J CV-22 Osprey Cessna Citation V Cessna Sovereign Dassault F7X Dassault F900 Dassault F2000 Embraer ERJ-170 Embraer ERJ-175 Embraer ERJ-190 Embraer ERJ-195 F-18 Gulfstream G350 Gulfstream G450 Gulfstream G500 Gulfstream G550 Gulfstream GIV_X Gulfstream GV Raytheon Hawker Horizon Raytheon Hawker 450 Pilatus

... partial list

Deos 653p4-Solo includes only the ARINC Specification 653 Part 4 interfaces at an exceptional value for small to medium complexity avionics LRUs that can benefit from standards conformance and the associated code portability.

Deos is a proven, full featured DO-178 Level A certifiable real-time operating system (RTOS) which addresses the issues of high robustness and formal certifiability for avionics and safety critical applications. Built from the ground up with these goals in mind, Deos is the only certifiable time and space partitioned COTS RTOS that has been created using RTCA DO-178, Level A processes from the very first day of its product development. Deos offers several unique fundamental and patented architectural advantages over all other competing RTOS's. The result is the best performance, lowest risk, easiest to certify, and lowest cost time & space partitioned COTS RTOS for airborne avionics and safety critical applications on the market today. Deos supports popular avionics standards and other certifiable features allowing users to customize their Deos environment by choosing from a variety of optional modules:

ARINC Specification 653 Part 1 ARINC Specification 653 Part 4 CFFS (Certifiable Fast File System) ARINC-615 Target Data Loader ARINC-664 Data Bus AFDX

The Best of Both Worlds... ARINC portability & patented value added features of Deos!

Deos 653 Hybrid Architecture

The Deos 653 Hybrid Architecture allows the best of both worlds with the portability of the popular avionics standards, and the value added features of Deos, such as slack scheduling, its modular architecture, application space device drivers and more.

Safety Cri t ica l Sof tware Solut ions

fo r Miss ion Cri t ica l Systems

Osprey & F-18 photos courtesy of Department of Defense Boeing 777 photo courtesy of Honeywell Cessna photo from iStockphoto.com

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Reduced Software Development Cost In addition to the typical RTOS services for memory management and synchronization, Deos has excellent support for hard-deadline deterministic periodic execution. Additionally, Deos provides highly efficient, deterministic inter-process/inter-processor, periodic & aperiodic communication mechanisms which enable the designer to isolate applications from changes in I/O format and bus hardware/source. Reduced Integration Cost It is common for resource contention conflicts, in otherwise well tested software, to manifest during integration. These errors can be difficult to locate because interactions are complex and rarely understood by any one individual. The Deos Integration Tool makes obvious, during development and design, an application's resources needs, this prevents contention while providing early warning of physical resource depletion. An application's memory, I/O, interrupt and processing time needs are defined early in the life cycle and follow it throughout develop-ment, testing & verification; thus reducing the time and cost of integration. Reduced Recertification Cost The cost to re-certify previously approved software is a function of the amount of change. Changing just a single module and then re-compiling / re-linking the whole system results in an entirely new executable. Deos solves this problem by supporting run-time linkable libraries and executables (i.e., it is a DO-178 Level-A Link/Loader). Consequently a change to one module within an executable impacts only that executable. The executables for the rest of the system, and even the run-time linkable libraries used by the application remain unchanged. This isolation of change impact results in a reduced re-certification cost thereby making it easier to embrace change and incrementally improve your product offerings. Improved Programmer Efficiency Of course, Deos comes with all the software development and debugging tools you've come to expect: IDE, Debugger, run-time system monitor/profiler, as well as integrated emulator support. Additionally, Deos provides integration and configuration tools which enable the designer to factor out what would otherwise be hard-coded constraints. This factoring ability not only speeds development, but also aids in verifying the correctness of the implementation, aided by Deos provided qualified verification tools.

Designed to Save Money on Software Development and Certification Costs

The DDC- I Advantage

With over 30 years

experience supplying

complex COTS and

custom development

solutions, DDC-I

provides long-term,

strategic advantages

to an ever changing

safety critical industry.

4600 E. Shea Blvd., STE 102 Phoenix, AZ 85028 P 602-275-7172 F 602-252-6054

www.ddci.com